RAFA
Headphoneus Supremus
- Joined
- Jan 31, 2009
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Here the Link to the Japanese spec sheet:
http://www.fostex.jp/wp/wp-content/uploads/2015/12/FOSTEX_HP-A4BL_Release.pdf
http://www.fostex.jp/products/hp-a4bl/
4 pole XLR-balanced output and inside a Burr-Brown PCM1792A. I believe the rest is basically the normal HP-A4.